Viscosity index: The viscosity index is an indicator that measures the change in oil viscosity with temperature. The higher the viscosity index, the less affected the oil is by temperature, the better the viscosity temperature characteristics, and the wider the applicable temperature range.
Condensation point: Condensation point refers to the lowest temperature at which lubricating oil stops flowing under certain test conditions. When selecting lubricating oil, its freezing point should be 5-7 ° C lower than the minimum ambient temperature to ensure normal flow under low temperature conditions.
Ignition point ": The ignition point is the lowest temperature at which lubricating oil may ignite when exposed to an open flame after mixing with air under certain conditions. Flash point is used to determine the safety of oil and the composition of fractions.
Moisture content: Moisture can emulsify oil, weaken the strength of the oil film, and cause abnormal wear and tear. Moisture also accelerates the oxidation process of oil, increases the formation of sludge, reduces the quality of oil, and even accelerates the corrosion of metals.
Pollution index ": Determine the number and level of pollutant particles in lubricating oil according to ISO4406 and NAS1638 standards. Particle pollution can increase equipment wear, especially in precision hydraulic and turbine systems.
These lubricant standards have a significant impact on the operation and maintenance of equipment. For example, lubricating oil with high viscosity index can maintain stable lubrication effect over a larger temperature range, while lubricating oil with high water content will reduce oil film strength and increase equipment wear. In addition, the quantity of pollutant particles can affect the accuracy and durability of the equipment. Therefore, selecting the correct lubricating grease and regularly checking its quality indicators is the key to ensuring the normal operation of the equipment.
